Unicode character uni2423 is present in a number of TeX fonts (Stix, Latin Modern Roman, a few others). If you are using LuaLaTeX or XeTeX, you can call the character directly, or paste it from a character map.

This is not necessarily better than the methods discussed in other replies. It is just another way to do it. Let's see if it works here. If you see the character between A and B below (pasted from character map), it means your browser's font has it (mine does):

A␣B

This method also works in LuaLaTeX and XeTeX as \verb|A␣B| as long as the font has the symbol.